Expression of miR-10b gene and methylation level in schwannomas
10.7652/jdyxb201801021
- VernacularTitle:神经鞘瘤中miR-10b基因表达和甲基化水平分析
- Author:
xin Jian GUO
1
;
Ke GAO
;
Lei QI
;
fu Wan XIE
;
feng Gao XU
;
Yi FENG
;
chun Rui LI
Author Information
1. 西安交通大学第一附属医院影像科
- Keywords:
schwannoma;
miR-10b;
methylation;
target genes
- From:
Journal of Xi'an Jiaotong University(Medical Sciences)
2018;39(1):97-101
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze miR-10b expression level and the gene upstream methylation level in schwannomas so as to explore and identify the potential target genes for miR-10b in schwannomas .Methods The miR-10b with its potential target genes including HOXB 3 ,HOXD10 ,PTEN ,PIK3CA ,MAPRE1 and HADC4 were quantitatively analyzed by PCR in 13 cases of schwannomas and 6 cases of human vestibulocochlear nerves . We studied the correlation between the differentially expressed genes and the clinical characteristics of schwannomas . Finally ,the differences in miR-10b gene upstream methylation levels were measured and analyzed by pyrosequencing between schwannomas and normal vestibulocochlear nerves .Results Compared with that of normal nerves ,the expression level of miR-10b was significantly higher (P=0 .0003) while the level of PTEN was lower (P=0 .0047) in schwannomas .Negative correlation existed between the levels of miR-10b and PTEN (P=0 .001 , r= -0 .689) . Moreover ,the methylation level of the miR-10b gene promoter was downregulated in schwannomas ;it had negative correlation with the expression level of miR-10b (P= 0 .011 , r= -0 .571) .There was a significant difference in tumor mass diameter between miR-10b higher expression group and lower group (P=0 .016);however ,there was no difference in age or recurrence rate (P>0 .05) .Conclusion The downregulation of methylation level of the promoter leads to higher expression of miR-10b gene ,and it may targetedly inhibit the expression of PTEN .
